How Email Works: SMTP, IMAP, SPF, DKIM, and DMARC Explained
Email is older than the web and was built to trust everyone. Follow a message from outbox to inbox through SMTP, MX records and IMAP, then s...
Oct 20, 2026
8 min
Attackers Passed DKIM and Hit 67,000 Inboxes in 3 Hours. We Scanned 666,803 Domains to See Why DMARC Didn't Stop Them
Microsoft's Q2 2026 report shows attackers passing DKIM at scale — 67,000 inboxes hit in 3 hours via Amazon SES. A daily scan of 666,803 Tra...